The movie would reunite Helman with his 'Mad Max: Fury Road' co-star Nicholas Hoult, who will reprise his role as Hank McCoy, aka Beast, from 2011's 'X-Men: First Class'.

It's not yet known what role the actor will play in the movie, but the part could prove to be significant as he is expected to be on set for several weeks.

Helman earned critical acclaim for his work in HBO's miniseries 'The Pacific' and he had a supporting role in 'Jack Reacher' opposite Tom Cruise last year.

The actor recently worked with Hoult, Tom Hardy and Charlize Theron on 'Mad Max', which will be released in 2014.

Singer's ambitious 'X-Men: Days of Future Past' will unite the cast of the original 'X-Men' trilogy - which ran between 2000 and 2006 - with the cast of 2011 prequel 'First Class' in a time-travelling plot when the future of the mutant race is put at stake.